[JamesonNetworks]

CSS uses global rules, hierarchical inheritance, is rendered differently between browser engines/mobile platforms, includes lots of hacky ways to do the same thing, and has constantly evolving standards. CSS is Hard with a capital H.

[urbandw311er]

Are you sure you're talking about the same thing as the parent comment? I believe they're discussing the maintenance and synchronisation of integrating third party .css file(s) into your code.